Building Automation for
Energy Efficiency
TELEFONICA SPAIN
Large Companies and Public Administration
London, June 2008
TELEFONICA SPAIN
Large Companies and Public Administration
2
Energy
Consumption
Comfort and
Commercial needs
Respect for the
Environment
TELEFONICA SPAIN
Large Companies and Public Administration
3
Occupancy
Calendar
+
Timetables
+
Date / Time
+
Occupancy
Sensors
Room occupancy: Unoccupied, Morning Warmup, Occupied, Night-time Setback, etc.
Management based on separate areas of control
Lighting
Intelligent Control
Outside / Inside +
Photocell sensor
+
Variable Lighting Lamps
and neon signs
Illumination Thresholds(*):
> 450 lx in office
>300 lx in corridors and halls
> 10 lx for emergency lights
(lx: lux = lumen/ m2)
Air Handlers
Zonal Temperature
Sensor
+
Intelligent Control
+
Variable Air Handlers,
Heating elements and
electric Fans
Temperature Thresholds(*):
(*)
< 24C/75F in summer
> 21C/70F in winter
The shown thresholds are defined according to the Spanish official regulation
TELEFONICA SPAIN
Large Companies and Public Administration
4
Standard Branch Office
1 Neon Sign
6 Separate Illumination areas
1 HVAC area (Heating,
Ventilating and Air
Conditioning)
6 Workplaces (PC & Monitor)
1 ATM (Automatic Transfer
Machine)
HVAC Area
HVAC Area
2 Money Meter
2 Printer & Scanner
In/out Photocell sensor
Temperature sensor
Figures and statistics
Annual Energy consumption (before): 31.740 KWh
Total Annual Savings (after): 27%
Distribution of Energy
Consumption (*)
Savings per Nature
35%
30%
30%
45%
10%
25%
(*)
Lighting
HVAC
Others
Statistics taken in a standard branch office in the south of Spain in a warm winter in 2007
TELEFONICA SPAIN
Large Companies and Public Administration
5
Standard Branch Office
1 Neon Sign
6 Separate Illumination areas
1 HVAC area (Heating,
Ventilating and Air
Conditioning)
6 Workplaces (PC & Monitor)
1 ATM (Automatic Transfer
Machine)
HVAC Area
HVAC Area
27% of a branch office 2energy
Money Meter consumption means…
9 Energy
2 Printer & Scanner
Savings(*):
In/out Photocell sensor
Temperature sensor
9 8.570 KWh not consumed
9 3,3 Tons of CO2 not emitted
Figures and statistics
9 The Carbon regeneration of three trees a year
Annual Energy
31.740due
KWh
9 consumption
Longer lifetime (before):
of the equipment
to rational use
Total Annual Savings (after): 27%
(*)
1 KWh = 389 gr. of CO2 (Greenhouse Gas Protocol initiative, 2007)
1 Ton of CO2 = 1 tree carbon regeneration per year (Dell, 2007)
Distribution of Energy
Consumption
Savings per Nature
30%
35%
30%
45%
10%
25%
(*)
Lighting
HVAC
Others
Statistics taken in a standard branch office in the south of Spain in a warm winter in 2007
TELEFONICA SPAIN
Large Companies and Public Administration
6
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Large Companies and Public Administration
7
Central Control
Technical alerts
and data for monitoring
Commands
and new rules
Branch Office
Network of Offices
geographically dispersed
Store / Supermarket
TELEFONICA SPAIN
Large Companies and Public Administration
Official Building / hospital
8
A Centralized Control of a geographically disperse network of
buildings
means…
Central
Control
9 The possibility of implementing building automation in the
network. In our case of study (500 offices) means:
¾ 4,285,000 KWh not consumed
¾ 1,600 Tons of CO2 not emitted
¾ The carbon regeneration of a little forest with
Technical alerts
and data for monitoring more than 1,600 trees
Commands
9
detection of failures, better planning and
and Quick
new rules
maintenance savings (evaluation, trips, etc.)
Branch Office
Store / Supermarket
TELEFONICA SPAIN
Large Companies and Public Administration
Official Building / Hospital
9
Consumption /
Costs objectives
Energy Intelligence
Commercial
Value
GOLD
SILVER
Branch Office
Central Control
Store / Supermarket
TELEFONICA SPAIN
Large Companies and Public Administration
statistics
policies
BRONZE
Official Building / hospital
10
Consumption /
Costs objectives
Energy Intelligence
Commercial
Value
GOLD
SILVER
The Energy Intelligence model enables the
commercial manager to…
statistics
policies
BRONZE
9 Reach an understanding between costs, comfort and
commercial
Centralvalue
Control
9 Transform it in rational, green and economic policies
9 Simulate, monitor and optimize consumption evolution
9 Implement predictive maintenance tasks instead of
reactive or preventive ones with more savings
Branch Office
Store / Supermarket
TELEFONICA SPAIN
Large Companies and Public Administration
Official Building / hospital
11
Some first Steps against Climate Change
José Alberto Varela Sanz
Senior Consultant in the Business Intelligence Unit
TELEFONICA SPAIN
Large Companies and Public Administration
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Large Companies and Public Administration
12